Ice-machine



'2 Sheets-Sheet 1.

(No 'Modem C. P. SMITH.

ICB MACHINE. No. 345,548. Patented July 18, 1886.

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2 Sheets-Sheet C. F. SMITH.

ICE MACHINE.

(No ModeL) No. 845,548. Patented July 18, 1888.

M MMM UNITED STATES PATENT OFFICE.

CHARLES F. SMITH, OF FITCHBURG, MASSACHUSETTS.

ICE-MACHINE.

SPECIFICATION forming part of Letters Patent No. 345,548, dated July 13,1886.

Application filed March 15,1886.

To all whom it may concern,.-

Beit known that I, CEAELEs F. SMITH, of Fitchburg, Worcester county,Massachusetts, have invented certainv Improvements in Ice- Machines; andI hereby declare the following to be a fullclear, and exact descriptionof the same, reference being'had to the accompanying drawings, makingpart of this specification, in which-v Figure 1 is a vertical sectionalview of my invention. Fig. 2 is a plan view of the same. Fig. 3 is ahorizontal sectional view.

My invention relates to that class of icemaking machinery operating withan alternately volatilized and condensed freezing medium, andparticularly relates to the condenser used in such class of machines.

My invention consists in a certain combination and arrangement ofdevices,as hereinafter set forth, and specifically recited in the claim,whereby the heat is extracted from the condensed freezing medium, aswill be fully described.

In order that those skilled in the art may make and use my invention, Iwill now pro-` oecd to describe the manner in which I have carried itout. A

In the'said drawings, A is a casing having its upper end open andprovided with a bottom, a, `from which depends a Siphon-trap drip-pipe,I). Arranged within the casing concentrically are three or more coils ofpipe, c e c, their upper ends entering a manifold, d, and their lowerends passing through the wall of the casing and terminating in amanifold, d. ported on a standard, f, is a gas-receiving chamber, f',from the bottom of which passes a pipe, g, out through the wall of thecasing to carry off any deposited oil from the incoming gas, the chamberacting as an oil-trap, and pipe g being provided with a valve, g. Apipe, h, conducts the condensed gas from the compressors into thegas-receiving chamber, and from there the gas escapes through pipe t' tothe manifold d, and passes into the coils e c c. While the gas 'passesthrough the coils it is subjected to a low temperature induced by therapidevaporation of moisture from the various surfaces within thecasing, which is brought about in the following manner: Just above theopen end of the casing is In the center of the chamber, sup-l Serial No.195,266. (No'morlcl.)

a cylindrical or convoluted perforated pipe,.V

B, having a watersupply pipe, B', from any desirable water-reservoir,and provided with proper valves to control the .flow at will. Theperforations in pipe B are arranged at such diverging angles that thespray thrown from them will completely cover the area of the top ofthecasing and drench the surfaces of the coils of the pipes, the interiorsurface of the casing,an'd the wall of the gas-receiving chamber f.While the spraying of the surfaces is going on, a strong downwardcurrent of air is produced through the casing by means of a suction-fan,F, which connects with three airducts, l l Z, tapping the casing atintervals of one hundred and twenty degrees on the circle ofthe casing,so as to draw the air steadily downwardly th rough the coils in awell-distributed manner. The rapid current of air moving downward overthe various surfaces that have been wetted produces an enormous andrapid evaporation from these surfaces. This evaporation absorbs therequired amount of heat necessary to change the condition of the waterto a vapor from the coils and surfaces ofthe casing,and thereby rapidlyreducing the temperature of any medium passing through the coils c cc".In this instance the cooled gas passes from the pipes or coils into themanifold d, and thence by pipe p to the pump or reservoir provided forits reception.

Having thus described my invention, what Iclaim as new, and desire tosecure by Letters Patent, is-n In ice-making and refrigerating machineryoperating with an alternately volatilized and condensed freezing medium,the condenser consisting of the casing A, exhaust-fan F,

multiple exhaust-pipes Z Z Z, central oil-trap chamber, f', connectedwith the gas-inflow pipe It, and pipo t', connecting the oil-trapchamber with manifold cl and manifold C, in combination with a sprayingdevice and a series of coils, e c' e, arranged within the casing andconnecting manifolds d and d', all constructed, arranged, and operatedas and for the purpose described CHARLES F. SMITH.

